Artículo
Droplet charging by high voltage discharges and its influence on precipitation enhancement
Fecha de publicación:
05/2012
Editorial:
Elsevier Science Inc.
Revista:
Atmospheric Research
ISSN:
0169-8095
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
Laboratory experiments were performed to determine the effect of electrical charges transferred on droplets by electrical discharges on their growth by collision and coalescence. A twin cloud chamber was built inside a large cold room and was filled with cloudy air. One chamber was used as the control chamber and, therefore, was left unperturbed. On the other hand, in an experimental chamber, electrical discharges were produced. Droplets grow during a free fall of 1. m, and the droplet spectrum was sampled by microscope slides covered in Formvar. The experimental arrangement could also measure charge on individual drops between 325 and 415 μm in diameter by using small induction rings.After comparing the spectra from both chambers, a shift towards larger sizes was observed in the cloud that sustained electrical discharge. Also, by measuring the charge on the droplets, it could be observed that the electrical discharge transferred charges of both signs. Discussions about the relevance for cloud seeding and fog elimination are carried out. © 2012 Elsevier B.V.
Palabras clave:
CLOUD SEEDING
,
DROPLET GROWTH
,
ECHO INTENSIFICATION
,
ELECTRICAL DISCHARGE
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Identificadores
Colecciones
Articulos(IFEG)
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Articulos de INST.DE FISICA ENRIQUE GAVIOLA
Citación
Pérez Hortal, Andrés Alberto; García, Sebastián Eduardo; Caranti, Giorgio Mario; Droplet charging by high voltage discharges and its influence on precipitation enhancement; Elsevier Science Inc.; Atmospheric Research; 108; 5-2012; 115-121
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